Alert archive / New York / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 39, NWS Buffalo, NY

June 15, 2017Livingston County, Ontario County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at Jun 15, 2017, 4:16 PM EDT for Livingston County, Ontario County, New York. It was in force for 44 min. 4 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jun 15, 2017, 4:16 PM EDT (20:16 UTC)
Expired: Jun 15, 2017, 5:00 PM EDT
In force: 44 min
Issued by: NWS Buffalo, NY
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Livingston County, NY, Ontario County, NY

The radar

The Buffalo radar (KBUF), 106 km from the middle of the area, began a volume at 20:17 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What was reported inside it

Time	Report	Where	Remark
Jun 15, 4:21 PM EDT	TSTM WND DMG	Geneseo, NY	TREES AND WIRES DOWN
Jun 15, 4:23 PM EDT	TSTM WND DMG	1 Se Geneseo, NY	TREE AND POWERLINES DOWN ON GROVELAND ROAD.
Jun 15, 4:33 PM EDT	TSTM WND DMG	Conesus, NY	TREES DOWN
Jun 15, 4:39 PM EDT	TSTM WND DMG	Livonia, NY	TREES AND WIRES DOWN

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 8.3 hours before the alert went out and 102 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1392 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 90 m²/s²
0-3 km storm-relative helicity: 100 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

480 
WUUS51 KBUF 152016
SVRBUF
NYC051-069-152100-
/O.NEW.KBUF.SV.W.0039.170615T2016Z-170615T2100Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Buffalo NY
416 PM EDT THU JUN 15 2017

The National Weather Service in Buffalo has issued a

* Severe Thunderstorm Warning for...
  Central Livingston County in western New York...
  Southwestern Ontario County in western New York...

* Until 500 PM EDT.

* At 415 PM EDT, a severe thunderstorm was located over Geneseo,
  moving east at 30 mph.

  HAZARD...60 mph wind gusts and penny size hail. 

  SOURCE...Radar indicated. 

  IMPACT...Expect wind damage to trees and power lines. 

* Locations impacted include...
  Canandaigua, Geneseo, Mount Morris, Conesus, Bristol, Rushville,
  Honeoye and Hemlock.

This includes Interstate 390 between exits 6 and 8.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4267 7787 4282 7789 4292 7720 4276 7719
      4276 7731 4271 7735 4267 7736 4267 7737
      4264 7737
TIME...MOT...LOC 2015Z 264DEG 27KT 4277 7778 

HAIL...0.75IN
WIND...60MPH
 
$$

Church

2 follow-up statements

768 
WWUS51 KBUF 152039
SVSBUF

Severe Weather Statement
National Weather Service Buffalo NY
439 PM EDT THU JUN 15 2017

NYC051-069-152100-
/O.CON.KBUF.SV.W.0039.000000T0000Z-170615T2100Z/
Livingston NY-Ontario NY-
439 PM EDT THU JUN 15 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 PM EDT
FOR EAST CENTRAL LIVINGSTON AND SOUTHWESTERN ONTARIO COUNTIES...

At 439 PM EDT, a severe thunderstorm was located over Honeoye, or 14
miles east of Geneseo, moving east at 30 mph.

HAZARD...60 mph wind gusts and penny size hail. 

SOURCE...Radar indicated. 

IMPACT...Expect wind damage to trees and power lines. 

Locations impacted include...
Canandaigua, Conesus, Bristol, Rushville, Honeoye, Hemlock, Canadice
and Livonia.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4266 7767 4284 7772 4292 7720 4276 7719
      4276 7731 4271 7735 4267 7736 4267 7737
      4264 7737
TIME...MOT...LOC 2039Z 264DEG 27KT 4279 7753 

HAIL...0.75IN
WIND...60MPH
 
$$

Church

974 
WWUS51 KBUF 152056
SVSBUF

Severe Weather Statement
National Weather Service Buffalo NY
456 PM EDT THU JUN 15 2017

NYC051-069-152105-
/O.EXP.KBUF.SV.W.0039.000000T0000Z-170615T2100Z/
Livingston NY-Ontario NY-
456 PM EDT THU JUN 15 2017

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL LIVINGSTON AND
SOUTHWESTERN ONTARIO COUNTIES WILL EXPIRE AT 500 PM EDT...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning will be allowed to expire.

Remember, a Severe Thunderstorm Warning still remains in effect for
Ontario County.

LAT...LON 4266 7767 4284 7772 4292 7720 4276 7719
      4276 7731 4271 7735 4267 7736 4267 7737
      4264 7737
TIME...MOT...LOC 2055Z 264DEG 27KT 4280 7736 

$$

Church

The office that day

Everything else NWS Buffalo, NY issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 15, 9:16 AM EDT	Special Weather Statement	BUF	Genesee	59 min
Jun 15, 10:17 AM EDT	Special Weather Statement	BUF	Livingston, Monroe	58 min
Jun 15, 11:24 AM EDT	Special Weather Statement	BUF	Ontario, Wayne	66 min
Jun 15, 11:41 AM EDT	Flash Flood Watch	BUF	Allegany, Cattaraugus, Chautauqua, Erie, Genesee, Livingston and 4 more	11 hr
Jun 15, 3:46 PM EDT	Special Weather Statement	BUF	Allegany, Cattaraugus, Livingston, Ontario, Wyoming	3 hr
Jun 15, 4:54 PM EDT	Severe Thunderstorm Warning	BUF	Ontario	66 min
Jun 15, 4:54 PM EDT	Severe Thunderstorm Warning	BUF	Genesee, Livingston, Monroe	51 min
Jun 15, 5:19 PM EDT	Flash Flood Warning	BUF	Allegany, Cattaraugus, Livingston, Ontario, Wyoming	7 hr
Jun 15, 5:26 PM EDT	Severe Thunderstorm Warning	BUF	Livingston, Ontario	64 min
Jun 15, 5:26 PM EDT	Severe Thunderstorm Warning	BUF	Genesee, Monroe, Orleans	49 min
Jun 15, 5:46 PM EDT	Severe Thunderstorm Warning	BUF	Monroe	29 min
Jun 15, 5:53 PM EDT	Special Marine Warning	BUF		52 min
Jun 15, 6:31 PM EDT	Special Weather Statement	BUF	Allegany	29 min
Jun 15, 6:42 PM EDT	Special Weather Statement	BUF	Monroe	63 min
Jun 15, 7:05 PM EDT	Flash Flood Warning	BUF	Livingston, Monroe, Ontario	3 hr

Nearby

Severe Thunderstorm Warnings in New York, 2017 Every severe thunderstorm warning in 2017

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.